Tuberous root is a term that describes the underground storage organ of certain plants, typically used for nutrient storage and reproduction. Synonyms for this term include swollen root, fleshy root, bulbous root, and root tuber. A swollen root refers to a root that has become enlarged due to the accumulation of nutrients. A fleshy root is a root that is thick and juicy, with high moisture content. A bulbous root is a type of fleshy root that is shaped like a bulb and grows from a stem. A root tuber is a swollen, underground stem that functions as a storage organ. These synonyms all describe different aspects of the tuberous root and can be used interchangeably to describe similar plant structures.